This Wossner K8625D050-2 piston kit is a high-performance forged set engineered for Harley Davidson 1200–1228cc engines. With an oversize bore of 89.50mm (+0.50mm), it is designed for optimised heat transfer, improved durability, and consistent performance under extreme conditions. Manufactured in Germany, this kit is suitable for demanding applications including motorsport.

Features

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  Forged piston construction offering high strength and durability

  
  


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  Elliptical design ensures even load distribution under thermal expansion

  
  


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  Maximises heat dissipation from combustion chamber to cylinder walls

  
  


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  Includes pistons, rings, pins, and circlips for complete installation

  
  


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  Designed for competition-level performance

  
  


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  Made in Germany

  
  

Specifications

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  Bore Size: 89.50mm (Piston Diameter: 89.45mm)

  
  


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  Compression Ratio: 10:1

  
  


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  Compression Height: 30.7mm

  
  


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  Quantity: Set of 2 pistons

  
  


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  Wossner Part Number: K8625D050-2

  
  


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  Reference Part Number: 56-W9941.050.WO

  
  

Cross-Reference OEM Part Numbers

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  Wossner K8625D050-2

  
  


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  56-W9941.050.WO

  
  

Vehicle Fitments

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  Harley Davidson S1 White Lightning 1200–1228cc

  
  


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  Harley Davidson Thunderbolt 1200–1228cc

  
  


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  Harley Davidson Buell 1200–1228cc